Crushing-mill.



No. 720,480. PATENTED PEB.10,`1903. H. U. PRINDLE. GRUSHING MILL.

APPLICATION FILED DEO. 13, 1901. N0 MODEL. f 2 SHEETS-SHEET 1.

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vNo. 720,480. Y PATENTED PEB. l0, 1903.

H. U. PRINDLE. v

GRUSHING MILL.

UNITED STATES PATENT HENRY URsoN PRINDLE', oF SACRAMENTO, CALIFORNIA.

CRUSH-ING-IVIILL.

SPECIFICATION forming part of Letters Patent N o. 720,480, datedFebruary 10, 1903. Application iiled December l 3,1901. Serial No.85,821. (No model.)

T @ZZ whom t may con/007171,:

residing at Sacramento, in the county of Sacramento and State ofCalifornia, have invented a new and Improved Crushing-Mill, of which thefollowing is a specification.

My invention relates to improvements in that type of crushing mechanismsin which crushing members are caused to revolve or roll upon a base ortray about a vertical axis, and in the principal application thereofrefers more particularly to that type of crushing apparatus technicallytermed Chili mills, in which the crushing members operate under aplanetary motion. l

My invention primarily seeks to provide a mechanism of the characterstated of a very simple and inexpensive nature in which the severalparts are compactly arranged and capable of effecting a crushing actionin an expeditious and effective manner.

My invention in its generic nature comprehends a base or bottom memberheld with a pan or a cross-head or frame detachably supported thereover,a central rotatable shaft, a bridge member secured to and rotatabletherewith'and having one or more radially-extending members providedwith concentrically-disposed vertical bearings, a vertical shaftsupportable within said radiallydisposed bearings, rotatable` thereon,and crushing devices supported upon the shaft to travel in concentricplanes about the central vertical axis rotatable with the shaft uponwhich they are mounted and'having members independently rotatable lin avertical plane. In its more complete nature my invention comprehends, inconnection with the central and concentrically-traveling rotatableshafts and crushing means for each concentricallydisposed shaft,including crushing members rotatable in a vertical plane as they rotatewith the shafts upon which they mount and travel around the central axisof the machine, a collecting-pan having screened discharges, a centralcone-shaped screened outlet, and deflector devices for incasing thedrive mechanism and cutting off communication between thedrive-mechanism section and the pan or crushing-section of my machine.

Again, my invention comprehends a novel arrangement of crushing-pan, asupporting- Be 1t known that l, HENRY URsoN PRINDLE, Y

frame, a rotatable carrier with drive-gearing detachably supported overthe pan on the frame, one or more vertically-disposed shafts rotatablymounted on the carrier and having independent rotation and crushing andmincing devices, including members rotatable in a vertical plane andadapted to be connected to said independently-rotatable vertical shafts,whereby .my improved mechanism may be adapted for use as an ore-crushingmachine or as a mincing apparatus.

In its subordinate features my invention consists in certain noveldetails of construction and peculiar combination of parts, all of whichwill hereinafter be fully explained,and specifically* pointed out in theappended claims, reference being had to the accompanying drawings, inwhich- --Figure l is a vertical section of my invention, showing thesame adapted for use as an ore-crushing mill. Fig. 2 is a'horizontalsectionof the same on the line 2 2 of Fig. l. Fig. 3 is a similar viewon the line 3 3 of Fig. l. o Fig. et is a diagrammatic plan view of thepan-bottom, illustrating the path of movement of thecrushing members.Fig. 5 illustrates my improvement as adapted for use as a meat-chopperor mincing-machine. Fig. 6 is a lhorizontal section of the same on theline 6 6 of Fig. 5. Fig. 7 is a diagrammatic section on the line 7 7 ofFig. 5, illustrating the path of movement of the cutting-knives.

In the practical construction of my invention the same embodiesv askeleton frame- Work consisting of integrally-joined crossarms A, havingpendent ends a to rest upon a supporting-frame, which when my inventionis especially adapted for use as an orecrushiug mill consists of aseries of inclined supports K,having foot portions 7c and ianged upperends, as at k', to receive the pendent ends a of the cross-arms A, whichmay be bolted orA otherwise made fast to supports K.

Integrally formed with or attached to the cross-arms A is a pendenthorizontally-disposed gear-rim A, thepurpose of which will presentlyappear, and centrally the gear portion A has a pendent central tubularhub A,

in which and in the central aperture a in the top frame is rotatablyheld a drive-shaft H,

the upper end of which carries a bevel-gear h, held to mesh with abevel-gearj ou a powershaft J, as shown.

Upon brackets L, pendent from the cast frame-arms A A, to which they arerigidly secured, is loosely supported a cut-O or deflector plate M, thepurpose of which will hereinafterbe further explained, and between saidplate M and the frame members A A is held the rotary carrier anddrive-gear mechanism, the peculiar construction of which andooi-relative arrangement with the main driveshaft and theindependent-ly-rotatable crushing members forms an essential feature ofmy invention.

The main carrier B rotates about the central axis of the machine and ina horizontal plane about the hub A The carrier consists of twohalf-sections I) h', having central bearing portions DX to engage thehub A6 and end bearing members by for the supplemental andindependently-rotatable shafts G G, presently again referred to, and thetwo sections l) and b are joined to form asolid member by bolts in anysuitable mannerfor example, as shown in the drawings.

Upon the lower end of shaft H is keyed a drive cog-disk C, which mesheswith the oppositely-disposed drive cogwheels C C', keyed on thesupplemental shafts G G, the upper end of which (the shafts G G) havinghead portions g g, having toothed faces g g', held to mesh with thegear-rim AQ as clearly shown in Fig. l.

lVhen used as an ore-crusher, the receptacle in which the crushingmembers are held to travel consists of a dished pan P, having screeneddischarges p in the side walls, that empty into an external annularchannel p2, that discharges at a point above the upper end of thedischargesp, and the bottom of said pan has a supplemental grinding orcrushing surface consisting of removable cast-iron sections I, as shown.

Upon the lower end of each shaft G G a yoke-frame E is held to turntherewith and to have a limited vertical movement thereon, and saidyokes have oppositely-projecting spindles e e, upon each of which ismounted a crushing-roller F, having a steel tire F', adapted tocooperate with the crushing bottom plates I I.

So far as described it will be readily apparent to those skilled in theart to which my invention appertains that power being applied to driveshaft J the same will impart motion to the shaft IVI and through itsgear C transmit a rotary motion to the gears C C on the shafts G G andimpart an independent rotation thereto, and by reason of the uppertoothed ends g g', that engage the stationary or master gear member A',the shafts G G as they are independently rotated are caused to travelaround the central axis of the machine, and thereby rotate the carrieror support I3 about the hub A, imparting, as it were, a planetary motionto the shafts G and the crushing devices carried thereon, which byreason of the manner in which the crushing-surfaces are attached to theshafts G G have an additional motion spirally relatively to theirconcentric movement over the crushing-base I. Thus when motion isimparted to the machine the crushing-rolls F F will be caused to travelover the surface in the directions diagrammatically illustrated in Fig.4, and thereby in a most thorough and effective manner crush allparticles held within the pan P. As the motion of the crushing-rolls F Fis such as to throw the auriferous material both toward the outer wallof the pan and toward the center thereof, the pan is formed with acentral conical tubular projection D, open at the bottom and terminatingat the top in a solid head d, having an annular seat (Z, that forms asupport for the centrally-apertured edge m' of the plate M, whichprevents splashing or crushed particles flying up onto the drivegearmechanism, and to allow for the escapo of the screenings that are throwntoward the center of the pan the part D has screened outlets D, asclearly shown in Fig. l.

Instead of the drive-shaft II being arranged to receive a power-gear atthe upper end, as shown in full lines in Fig. l, said shaft may beextended down through the member D and have a power-gear at the bottom,as shown in dotted lines in said Fig. l.

Vhile my improved crushing mechanism is more especially designed as anore-crushing mill, it is manifest that with butslight modiiications, allwithin the scope of my invention, the same may be readily adapted forother uses. For example, the same may be used as a means for cuttingmeats, vegetables, nuts, dac. l/Vhen thus adapted, but a single crushingor cutting device is used, and the carrier B is projected radially fromthe shaft Hin one direction only.

The cast frame members in the form of my device illustrated in Figs. 5,6, 7 project doWn into sockets S on the outside of the supporting means,which in the construction shown is in the nature of a tub R, having itsbottom R composed of edge grain pieces, as shown. The yoke-frame E inthe said modied form has its arms E sufficiently spread to cause them totravel close up to the center of the tub, whereby the cutters in thenature of sharp disks FX will traverse the bottom in the mannerdiagrammatically shown in Fig. 7, and in consequence travel over nearlythe entire surface of the bottom. Instead of applying a power-shaft toshaft I'I in the form last described the same may be turned by acrank-handle, as shown.

From the foregoing, taken in connection with the accompanying drawings,it is thought the advantages of my invention will be readily apparent.

It will be noticed the several parts are of IOO IOS

such correlative construction as to admit of their being readilymanufactured at a small cost and easily assembled and operated.

When adjusted for crushing or cutting meats, dac., the yoke E ispreferably held for a limited yielding movement vertically and held downby means of a coiled spring O, the tension of which may by regulated bythe screw-nut T.

By connecting the yokes E to the shafts G in the manner shown allows forthe said yokes, together with the rolls F, to rise when the rolls orCrushers come into contact with a large or hard particle of the materialto be crushed, and in case of the Wearing away of the bottom I, theCrusher-rolls F and the cutters Ili Will be able to keep up an evenpressure upon the said bottom by reason ofl gravitating to a propercontacting position.

While I have shov'vn a tension device for holding the cutter-carryingyoke (see Fig. 5) only, it is obvious the same means may be used forholding the crushing-rolls down against the bottom.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

l. The combination with a holder for containing the material to becrushed, a frame detachably su pportable' over said holder, said framehaving pendent brackets, and the deiiector-plate M supported on saidbrackets; of the central shaft H, the horizontally-disposed carrier B,rotatable with the shaft H, the shaft G, journaled in the carrier B, theyoke E rotatable with the shaft G,the crusherrolls mounted on the yoke Efor independent rotation, and gear mechanism for joining the shafts Hand G, and for imparting a planetary motion to the shaft G with itssupport E, as set forth. v

2. In an apparatus as described, thecombination `with a holder havingscreened outlets in its side Walls, and an axially-disposed screenedoutlet; of a holder, a frame detachably mounted on said holder, thecentrallymounted shaft H, the carrier B, held to turn therewith andprojected in opposite directions therefrom the shafts G mounted on theends of said carrier, yoke-frames E one on each shaft G, the rollers Fmounted on the yoke E, and the gear connections joining the shafts G G,with the drive-shaft, all being arranged substantially as shown anddescribed.

3. The combination with the supports K, the holder havingacentralconical upwardlyextending portion D, and having screened outlets in itsouter Walls and also the Walls of its central conical portion D; of theframe- A detachably held on the supports K, said frame having a pendentannular toothed rim,

gear on each of the shafts G, held to 'mesh with the drive-gear C, theyoke-frames E on the lower end of each shaft G, said framesE havingstub-axles, the rollers F, one on each of the stub-axles and means forimparting motion Ito the shaft H, all being arranged substantially asshown and for the purposes described.

HENRY URSON PRINDLE.

Witnesses:

G. N. HARRIS, J C. SoMERsETT.

